<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>vue</title>
</head>
<body>
    <div id="app">
        <h2>{{msg}}</h2>
    </div
    <script src="./js/vue.js"></script>
    <script>
        const app = new Vue({
            el:'#app',//element，挂载的容器
            data:{
                msg:"Hello Vue!"
            }
        })
    </script>
    
</body>
</html>